Justin Bieber Goes Incognito as He Spends a Late Night Partying with Rita Ora in Los Angeles

Justin Bieber and Rita Ora

FameFlynet

By Lindsay Kimble

@lekimble

06/02/2016 AT 05:55 PM EDT

Young, single and sexy – and on the town.

Justin Bieber was spotted leaving the reopening of Hollywood hotspot Warwick in Los Angeles on Wednesday night with fellow pop star and pal Rita Ora.

A source tells PEOPLE that while Bieber arrived alone to the club, Ora, 25, surprised him just an hour later, joining his table.

"Justin was super stoked to see her as he wasn't expecting her to come," the insider says. "They gave each other a huge hug and caught up over cocktails."

The source notes that the pair were "super friendly" but definitely "not romantic."

Rita Ora

AKM-GSI

"They were very animated with each other and had a great time," the source adds. Ora, who wore combat boots with her sweatshirt and mini skirt, and Bieber both left out of the venue's private entrance just before 2 a.m. Bieber, 22, kept his face mostly covered, zipping up his hooded sweatshirt as he left.

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Warwick, which is co-owned by JT Torregiani and Sylvain Bitton, re-launched on Wednesday as Warwick No. 6. The club has a Miami Vice feel with white walls and furniture, and fun flamingo wallpaper upstairs.

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